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2017年浙江省高考数学第21题第(2)问,是关于抛物线的综合题,题意清晰,简明,貌似容易入手,但运算繁杂,导致解题受阻,如何在解此题中找到恰当的突破口.一般要根据所要解决的问题的形式、结构特点,通过全面、细致的观察及深刻的分析获取有用的信息,广泛联想与条件、结论有关的概念、公式、法则、定理,进行合乎情理的思维.但不受陈规的约束,敢于标新立异,多角度、多途径探索就可排除非本质表象,找到切
In 2017 Zhejiang province entrance exam math 21 (2) asked about the synthesis of the parabola, the title is clear, concise, seemingly easy to start, but the operation complicated, leading to problems solved, how to find the right solution in this problem Breakthroughs are generally based on the form of the problem to be solved, structural characteristics, through comprehensive and meticulous observation and analysis of access to useful information, a wide range of associations and conditions, conclusions related concepts, formulas, rules, theorems, reasonable Thinking, but not bound by stereotypes, dare to be unconventional, multi-angle, multi-channel exploration can exclude the non-essential appearance, find the cut